Requires for OS X 10.13 High Sierra or later, not compatible with versions prior to for OS X 10.13. Before installation, you need to use the original SSD to upgrade for OS X Compatible with for OS X Air 11inch A1465 and for OS X Air 13inch A1466 (20132017 Mid), for OS X Pro 13inch A1502 and 15inch A1398 (late 2013mid 2015), for OS X ME253 MD878 This NVME SSD conversion adapter uses a DIY kit for assembling an upgraded version of the SSD replacement, equipped with a large-capacity NVME SSD Adopts M-Key M.2 NVME input interface, does not support SATA M.2 protocol.Input Interface: M-Key M.2 NVME (does not support SATA M.2 protocol) SSD adapter card have stable transmission, excellent performance and long service life